I expected TFTP to be slow on IOS. Switched to SCP and I'm topping out at ~45Kbps. I get consistently slow speed on 3560(X), 3750(X) and similar vintage devices.
Doing sh proc cpu hist suggests the switch's CPU is bottlenecking on the encryption cycles. I looked at changing the ciphersuite to a less cpu-intensive one such as RC4, but didn't get very far.
Thoughts?
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